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valid, <strong>the</strong> supplicant (client device) is allowed to access resources located on <strong>the</strong><br />
protected side of <strong>the</strong> network.<br />
QUESTION NO: 2<br />
What is a difference between TACACS+ and RADIUS in AAA?<br />
A. Only TACACS+ allows for separate au<strong>the</strong>ntication.<br />
B. Only RADIUS encrypts <strong>the</strong> entire access-request packet.<br />
C. Only RADIUS uses TCP.<br />
D. Only TACACS+ couples au<strong>the</strong>ntication and authorization.<br />
Answer: A<br />
Au<strong>the</strong>ntication and Authorization<br />
RADIUS combines au<strong>the</strong>ntication and authorization. The access-accept packets<br />
sent by <strong>the</strong> RADIUS server to <strong>the</strong> client contain authorization information. This<br />
makes it difficult to decouple au<strong>the</strong>ntication and authorization.<br />
TACACS+ uses <strong>the</strong> AAA architecture, which separates AAA. This allows separate<br />
au<strong>the</strong>ntication solutions that can still use TACACS+ for authorization and<br />
accounting. For example, with TACACS+, it is possible to use Kerberos<br />
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